What two numbers multiply to -540 and add up to 21?

Here we answer the question: "What two numbers multiply to -540 and add up to 21?"

The answer to your question is:

-15 and 36

Below we illustrate and prove that -15 and 36 multiply to -540 and add up to 21:

-15 × 36 = -540
-15 + 36 = 21

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 21x - 540 = 0

If so, the solution to factor the quadratic equation above is:

(x - 15 ) (x + 36)

To summarize, since -15 and 36 multiply to -540 and add up 21, you know that the following is true:

x² + 21x - 540 = (x - 15 ) (x + 36)

Multiply To One Number and Add Up To Another
Did you find the information on this page useful? Here you can solve a similar problem.